Improvement in strap-pulley supports for suspender-buckles



W. P. OSBORNE. upport for Suspender-Buckles.

Strap-Pulley S No. 221,856.

Patented Nov. 1 8, I879.

Inventor: V WilburF Osborne,

" may;

MPEIERS, PHOTO-LITNOGRAPHER. WASHINGTON, u c.

UNITED STATES PATENT FFIGE.

lMPROVElVIENT lN STRAP-PULLEY SUPPORTS FOR SUSPENDER'BUCKLES.

Specification forming part of Letters Patent No. 221,856, dated November18, 1879 application filed October 8, 1879.

To all whom it may concern:

Be it known that I, WILBUR F. OSBORNE, of Ansonia, in the county of NewHaven and State of Connecticut, have invented certain new and usefulImprovements in Strap-Pulley Supports of Suspender-Buckles, of which thefollowing is a specification.

My invention relates to an improvement in the strap -pulley supports ofsuspenderbuckles; and its object is to secure a strong flexibleattachment of the said support to the buckles, to reduce the cost, andto increase the facility of manufacture of said supports.

To this end the invention consists in a buckle-pulley support formed ofa single piece of sheet metal folded double, having its free endsprovided with bearings for a )ulley-piv- 0t, and its middle or creasedportion formed into one or more tubular bearings, which embrace thelower horizontalor cross bar of a buckle-frame, provided with a topclampinglever for holding the suspender.

The pulley-supports thus constructed have no soldered or other jointswhich are liable to give way and open under the strain to whichsuspenders are subjected. They are formed from blanks cut to a uniformsize by a die, are manufactured wholly without the use of heat, and areattached to the buckle without the use of tools, and by a single andvery slight manipulation, all of which will be more fully hereinafterset forth.

In the accompanying drawings, Figure 1 is a perspective view of asuspender-huckle provided with a strap-pulley support according toimyinvention, showing an ordinary buttonhole strap or cord passing over thepulley. Fig. 2 is a similar view, showing a metallic button-hole chainpassing over the pulley. Fig. 3 is a view of the blank from which thepulley-support is formed; and Fig. 4 is an edge View of thebuckle-pulley support and pulley.

The letter A indicates the pulley-support, formed of a single piece orblank of sheet metal, folded to form tubular bearings b at its middleportion to embrace the lower horizontal or cross bar, 0, of thebuckle-frame D. Between the depending and free ends of the support A isjournaled a strap-pulley, e, the pivot f of which has its bearings insaid ends.

Being formed of a single piece, the pulley-support is not liable to bebroken, as there are no joints or seams to weaken any portion of itsstructure. It is manufactured without the use of heat, and mav be madeentirely by automatic machinery. When fully formed, as shown in Fig. 3,it may be attached to the frame, without the use of tools, by simplypassing one end through the slot above the lower buckle-bar, so that thesupport will straddle said bar, which may then be easilysprung in to thetubular bearings. These bearings are held closed by the elasticity ofthe metal, and the bar is thus prevented from escaping; andeven shouldit become released from these hearings by any extraordinary strain, thepulley will still prevent the support from becoming entirely detachedfrom the buckle-frame.

I am aware that a pulley attachment for shoulder braces has beenheretofore constructed of a blank folded at the middle 'por tion andattached at the free ends to the straps or hands of the brace, thepulley being pivoted between the intermediate portion; and that apulley-support has been formed of a blank bent up to form a recess forthe pulley, and formed with a loop atone of its free ends, to be securedto the lower bar of the buckle. The first-mentioned device, however,lacks the necessary flexibility, which can only be secured by the loopattachment, while in the last-mentioned device any strain upon the loopwill be liable to force the parts asunder, unless they are united byrivets, solder, or otherwise. I

What I claim is A buckle-pulley support formed of a single piece ofsheet metal folded double, having its free ends provided with bearingsfor a pulleypivot, and its middle or creased portion formed into one ormore tubular bearings for embrac in g the lower horizontal bar of abuckleframe,

substantially as described.

WILBUR F. OSBORNE.

Witnesses G. D. CHEEsMAN, FRANKLIN BURTON.

